冻融作用对过湿石灰改良土抗剪强度影响分析  

Freeze-thaw action across wet lime improved soil shear strength impact analysis

作　　者：王宇琪[1] 申杨凡[1] 王绍全[1] 高斯[1] 陶源[1] 韩春鹏[1] 

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040

出　　处：《山西建筑》2015年第14期52-53,共2页Shanxi Architecture

基　　金：中央高校基本科研业务费(项目编号:2572014CB21);黑龙江省自然科学基金(项目编号:E201349);国家级大学生创新训练计划项目(项目编号:201410225040)

摘　　要：以哈尔滨某施工工地取土场低液限粘性土为试验对象,通过室内直剪试验,得到了不同冻融循环次数对于6%掺灰的过湿石灰改良粘性土的抗剪强度的影响规律,试验结果表明:随着冻融次数的增加,过湿条件下石灰改良粘性土的抗剪强度降低,粘聚力减小、内摩擦角呈线性增加的变化趋势。Taking the low liquid limit clay soil from a construction site field in Harbin as the test object. Through the indoor direct shear test, ob- tained the influence law of the different freezing and thawing cycles for 6% of the mixed ash wet lime improved on the cohesive soil＇ s shear strength. Experimental results show that with the increase of number of freezing and thawing, under the condition of wet, the lime improved cohe- sive soil＇ s shear strength is reduced, cohesive force decreases, internal friction angle of the change trend of linear increase.

关 键 词：过湿条件 冻融作用 石灰改良土 抗剪强度 

分 类 号：TU431[建筑科学—岩土工程]